Home / 78,476.12-108,314.24-51,621.28

Finding the Fourth Proportional to 78,476.12, 108,314.24 and 51,621.28

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Solution

The fourth proportional to 78,476.12, 108,314.24 and 51,621.28 is: 71,248.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,476.12 : 108,314.24 = 51,621.28 : x
  2. Step 2: Convert to fraction form
    78,476.12/108,314.24 = 51,621.28/x
  3. Step 3: Cross multiply
    78,476.12x = 108,314.24 × 51,621.28
  4. Step 4: Simplify right side
    78,476.12x = 5,591,319,711.03
  5. Step 5: Solve for x
    x = 5,591,319,711.03/78,476.12
  6. Step 6: Final answer
    x = 71,248.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.